Electric light flasher



ELECTRIC LIGHT FLASHER Filed Oct. 16, 193.1

Fig-1- Patented Sept. 26, 1933 PATENT OFFICE ELECTRIC LIGHT FLASHERSilas G. Ramsey, University City, and Edwin S.

Zacharias, Clayton, Mo.

Application October 16, 1931. Serial No. 569,237

3 Claims.

This invention relates to an electric light flasher; and has particularreference to devices for simultaneously lighting and simultaneouslyextinguishing the light of a number of electric l lamps.

This invention relates to a modification of an invention described andclaimed in our application filed October 16, 1931, Serial No. 569,236.

An object of the invention is to provide an improved and simplifieddevice arranged to operate automatically as an incident to the closingof a switch to an electric lamp with which a number of additional lampsare in parallel circuit, in order to control the electric circuit cf- 16and to extinguish the light of all of the lamps simultaneously.

Another object of the invention is to provide an improved electric lampsocket containing a 20 device operating to interrupt the effective flowo1 electrical energy in such a way as to light and to extinguish thelight of the lamp alternately and at predetermined intervals.

Other objectsv of the invention will appear from the followingdescription, reference being made to the accompanying'drawing, in which-Fig. 1 is a top plan view of two electric lamp sockets connected with anelectric circuit in accordance with the principles of the presentinvention.

Fig. 2 is a sectional view on the line 22 of Fig. 1.

Fig. 3 is an inverted plan view of the principal socket.

Fig. 4 is a sectional view on the line 44 of Fig.1.

Fig. 5 is a diagrammatic view of the electric circuit.

The controlling socket of the invention comprises an electricallynon-conductive body including a socket portion 1 and a base 2. A metallic sleeve 3 is secured within the socket l and is in electricalcommunication with a metallic arm 4 projecting lateralhr therefrom andsecured to the base 2 by a metallic screw fastener 5. A wire 6 of theelectrical circuit is attached to the arm 4 by the fastener screw 5.

The other circuit wire 7 is attached by a fastener screw 8 to a metallicstrip 9. The screw 8 is also utilized to secure the strip 9 to the base2 of the socket.

A bar 10 comprising two strips of metal secured together in superimposedrelationship and having difierent coefiicients of expansion andcontraction when heated and cooled has its inner fectively to light allof the lamps simultaneously end embedded in the base and attached to theelectrical conductor member 11. The conductor member 11 is rigid in thebase of the socket and extends upwardly into the socket in position tobe engaged by the point 12 of the electric lamp 13. It is known that oneend of the filament 13 of the lamp 13 is in electrical communicationwith the point 12 and that the other end of said filament is inelectrical communication with the metallic band 14 attached to the bulbof the lamp and threaded so that the same may be screwed into and out ofthe sleeve 3 with which the wire 6 is in electrical communication.

A coil of wire 15 is wound around an insulation sleeve 16 mounted on thebar 10, the inner '10 end of said wire being in electrical contacteither with the bar 10 or the electrical conductor 11, as may bedesired. A wire 17 connects the wire 15 with a fastener screw device 18,whereby said wire 1'7 is held in electrical communication with the strip9. A contact member 19 attached to the bar 10 is movable, by bendingsaid bar 10, into and out of contact with the cooperating contact member20 attached to the inner end of the fas- 22 in the manner shown, inwhich the metallic band 23 on said lamp is screwed in the threadedsleeve 24 mounted in said socket 21 and in elec- 35 trical communicationwith the metallic arm 25 to which one end of a wire 26 is secured by abinding screw 27. The opposite end of the wire 26 is attached by a screw28 to a metallic strip 29 which is embedded in the base 2 of the primarysocket and is in electrical contact with the electrical conductor member11.

It is known that one end of the filament of the lamp 22 is in electricalcommunication with the band 23 and that the other end of said filamentis in electrical communication with the point 30 which is designed andadapted to engage a contact member 31 that is in electricalcommunication with an electric conductor 32 secured in the base of thesocket 21. A strip 33 forms electrical communication from the conductormember 32 and is secured to one end of a wire 34 by a binder screw 35.The opposite end of the wire 34 is engaged with the screw 5 and the arm4.

When the electric circuit to the wires 6 and 7 is closed, the electricalenergy passes through the wire 7, the strip 9, wire 17, wire 15,conductor member 11, point 12, filament of the lamp 13, and thence tothe wire 6, or vice versa. The resistance obtained by the wire 15prevents the

